org.apache.lucene.search
Class Scorer

java.lang.Object
  org.apache.lucene.search.Scorer

public abstract class Scorer

extends Object

Expert: Implements scoring for a class of queries.

Constructor Summary

protected

Scorer(Similarity similarity) Constructs a Scorer.

Method Summary

abstract Explanation	explain(int doc) Returns an explanation of the score for doc.
Similarity	getSimilarity() Returns the Similarity implementation used by this scorer.
abstract void	score(HitCollector hc, int maxDoc) Scores hits and passes them to a collector.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Scorer

protected Scorer(Similarity similarity)

Constructs a Scorer.

Method Detail

getSimilarity

public Similarity getSimilarity()

Returns the Similarity implementation used by this scorer.

score

public abstract void score(HitCollector hc,
                           int maxDoc)
                    throws IOException

Scores hits and passes them to a collector. Stops at the last document before maxDoc. If called repeatedly, will restart at point where it last left off.

Throws:

IOException

explain

public abstract Explanation explain(int doc)
                             throws IOException

Returns an explanation of the score for doc.

Throws:

IOException